What you were expecting to happen, and what actually happened:
I expect terror will swap positions of two cards but actually it moved the 1st slot to 3rd and 3rd to 2nd causing two cards on top of each other in the 2nd slot
How often does this happen? When did it begin happening?
Happened today in journey battle
Steps to make it happen again
I guess play a journey game and let terror proc in your team
In my experience, I usually see this happening on the enemy team, however just earlier this week I captured it happening on my team. (I still won the battle, but weird.)
My team formation prior to the bug:
Guardian of the Fields (Terror)
Artema (Terror)
Hero
Oneiros
After the bug:
(empty)
Hero (overlapping Artema (Terror); functionally just Hero)
Guardian of the Fields (Terror)
Oneiros
The observations are plain:
None of my affected Troops were in last position to actually flee from Terror.
Guardian of the Fields was shuffled down TWO spots, not one
Clicking on my slot #2 inconsistently pops up either Artema or Hero.
Skull damage and spellcasts indicate Artema is non-present for the remainder of battle.